Oldsmobile Cutlass Supreme 1993 Owner's Manuals

3. Pull the taillight housing away from
4. Press the bulb housing release lever
the
body
of the vehicle.
and turn the housing
'16 turn
counterclockwise to remove it.
5. To replace the bulb, pull it from the
6. Reverse all steps to reassemble the
assembly.
taillight.
Fog Light Bulb Replacement
Oldsmobile recommends that you not
change your
fog light bulb unless you
have the proper aiming equipment. See
your Oldsmobile dealer for help with
this.
249

Sewice & Appearance Care
Windshield Wper Blade
Replacement
Replacement blades come in different
types and are removed
in different
ways. Here’s how to remove the type
with a release clip:
1. Pull the windshield wiper arm away
2. Lift the release clip with a
from the windshield.
screwdriver and
pull the blade
assembly
off the wiper arm.
the wiper m.
3. Push the new wiper blade securely on
Loading Your Vehicle
Two labels on your vehicle show how
much weight it may properly carry. The
Tire-Loading Information label found on the inside
of the trunlc lid tells you
the proper size, speed rating and
recommended inflation pressures for
the tires on your vehicle. It
also gives
you important information about the
number
of people that can be in your
vehicle and the total weight that you
can carry. This weight is called the
Vehicle Capacity Weight and includes
the weight
of all occupants, cargo, and
all nonfactory-installed options.
The other label is the Certification label,
on the rear edge
of the driver’s door. It
tells you the gross weight capacity
of
your vehicle, ded the GVWR (Gross
Vehicle Weight Rating). The GVWR
includes the weight of the vehicle,
all
occupants, fuel and cargo. Never exceed
the
GVWR for your vehicle, or the
Gross Axle~Weight Rating (GAWR) for
either the front
or rear axle.
And,
if you do have a heavy load, you
should spread it out. Don’t cany
more
than 167 lbs, (75 kg) in your trunk.

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Poorly maintained and improperly used tires are dangerous.
Overloading your tires can cause overheating as a result of too much
friction. You could have an air-out and a serious accident. See
Loading Your
Vehicle earlier in this section.
Underinflated tires pose the same danger as overloaded tires. The resulting
accident could cause serious injury. Check all tires frequently to maintain the
recommended pressure. Tire pressure should be checked when your tires are
cold.
Overinflated tires are more likely to be cut, punctured, or broken by a sudden
impact, such as when you hit a pothole. Keep tires at the recommended
pressure.
Worn, old tires can cause accidents. If your tread is badly worn, or if your
tires have been damaged, replace them.

Inflation-Tire Pressure
The Tire-Loading Information label
which is on the inside of the trunk lid
shows the correct inflation pressures for
your tires, when they’re cold. “Cold”
means your vehicle has been sitting for
at least three hours or driven no more
than a mile. When to Check
Check your tires once a month or
more.
Don’t forget your compact spare
tire. It should be
at 60 psi (420 kPa).
How to Check:
Use a good quality pocket-type gage to
check tire pressure. Simply looking at
the tires will not tell you the pressure,
especially
if you have radial tires-
which may look properly inflated even
if
they’re underinflated.
If your tires have valve caps, be sure to
put them back on. They help prevent
leaks by keeping out dirt and moisture.
c
253

Service & Appearance Care
254
Tire Inspection and Rotation
To make your tires last longer, have
them inspected and rotated at the
mileages recommended in the
Maintenance Schedule. See the
Index
under Scheduled Maintenance
Services.
Use this rotation pattern. After
the tires have been rotated, adjust
the front and rear inflation pressure as
shown on the Tire-Loading Information
label. Make certain that all wheel nuts
are properly tightened. See the
Index
under Wheel Nut Torque.
A
Rust or dirt on a wheel, or on
the parts to which it is
fastened, can make the wheel nuts
become loose after a time. The
wheel could come
off and cause an
accident. When you change a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, you
can use a cloth or a paper towel to
do this; but be sure to use a scraper
or wire brush later, if you need to,
to get all the rust or dirt
off. (See
the
Index under Changing a Flat
Tire. 1

Sewice & Appearance Care
256
1 Uniform Tire Quality
Grading
The following information relates to the
system developed by the United States
National Highway Traffic Safety
Administration which grades tires by
treadwear, traction and temperature
performance. (This applies only to
vehicles sold in the United States.)
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and a half (1%)
times as well on the government course
as a tire graded
100. The relative
performance of tires depends upon the actual
conditions
of their use, however,
and may depart significantly from the
norm due to variations
in driving habits,
service practices and dif€erences in road
characteristics and climate.
Traction-A, B, C
The traction grades, from highest to
lowest are:
A, B, and C. They represent
the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces
of asphalt and concrete. A tire
marked
C may have poor traction
performance.
Warning: The traction grade assigned
to this tire is based on braking (straight-
ahead) traction tests and does not
include cornering (turning) traction.
Temperature-A, B, C
The temperature grades are A (the
highest),
B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can cause the material of
the tire to degenerate and reduce tire
life, and excessive temperature can lead
to sudden tire failure. The grade
C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No.
109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law.

Warning: The temperature grade for
this tire is established for a tire that is
properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either separately
or
in combination, can cause heat
buildup and possible tire failure.
Those grades are molded on the
sidewalls of passenger car tires.
While the tires available as standard or
optional equipment on General Motors
vehicles may vary with respect to these
grades, all such tires meet General
Motors performance standards and
have been approved for use on General
Motors vehicles. All passenger type
(P Metric) tires must conform to
Federal safety requirements in addition
to these grades.
Wheel Alignment and
Tire Balance
The wheels on your vehicle were
aligned and balanced carefully at the
factory to give you the longest tire life
and best overall performance.
In most cases, you will not need to have
your wheels aligned again. However, if
you notice unusual tire wear
or your
vehicle pulling one way
or the other, the
alignment may need to be reset.
If you
notice your vehicle vibrating when
driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked
or badly rusted. If wheel nuts keep
coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If
the wheel leaks air out, replace it
(except some aluminum wheels, which
can sometimes be repaired). See your
Oldsmobile dealer if any of these
conditions exist. Your dealer will know
the kind of wheel you need.
Each new wheel should have
the same
load carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
If you need to replace any of your
wheels, wheel bolts, or wheel nuts,
replace them only with new GM
original equipment parts. This way, you
will be sure to have the right wheel,
wheel bolts, and wheel nuts for your
Oldsmobile model.
257

!
A
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts
on your vehicle can be
dangerous. It could affect the
bralcing and handling
of your
vehicle, make your tires lose
air and
male you lose control. You could
have a collision
in which you or
others could be injured. Always use
the correct wheel, wheel bolts, and
wheel nuts for replacement.
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